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Enquête expérimentale sur l'âge de l'air local et la distribution d'air d'un système de ventilation par strates.

Experimental investigation on the local air age and air distribution of stratum ventilation.

Auteurs : WANG F., LI Y., LIU X., et al.

Résumé

Because of the multiple problems on high energy consumption and unbalanced thermal comfort caused by the traditional ventilation system, a new concept of ventilation (stratum ventilation) has been proposed which sends the fresh air to the breathing zone directly. In this paper the local air distribution of the displacement ventilation and the stratum ventilation in a model office were measured. The air age in the breathing zone for the displacement ventilation and stratum ventilation were compared with the tracer gas concentration decay method. The decay curves of tracer gas concentration for these two ventilation systems in the breathing zone were obtained and the air ages were calculated. The experimental results show that the stratum ventilation system can offer lower air age for four mechanically ventilated cases in the breathing zone, furthermore, it can provide better thermal comfort, which renews the air of breathing zone more quickly and reduces the energy consumption in some degree. The experimental investigation provides a theoretical basis for the application of a stratum ventilation system.

Documents disponibles

Format PDF

Pages : pp. 512-517

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Experimental investigation on the local air age and air distribution of stratum ventilation.
  • Identifiant de la fiche : 2010-0886
  • Langues : Anglais
  • Source : ACRA-2009. The proceedings of the 4th Asian conference on refrigeration and air conditioning: May 20-22, 2009, Taipei, R.O.C.
  • Date d'édition : 20/05/2009

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